Major League Stoner: A person very experienced in the usage. or smoking of marijuana, or someone who has smoked weed for a long period of time becoming an a master/expert on subjects regarding marijuana , such as potency and strains, as well as market pricing and other such subjects related to marijuana, and its use.
My friends is a MLS ,a major league stoner
, he smokes all day everyday. You need to know something about weed
you go to him, he's an expert.